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Machining, Grinding and Lapping Specialists Since 1962

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  • Hygrade is your Precision Contract Machining Specialist
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From blueprint to finished part, Hygrade does it all

Since 1962, Hygrade Precision Technologies has provided our customers with the experience and resources to meet their most challenging requirements. Hygrade specializes in precision contract machining, grinding, and lapping services. We serve the aerospace, automotive, commercial, homeland security, medical & power generation industries.


  • Flat Grinding & Lapping
  • Cylindrical Grinding
  • CNC Multi-Axis Machining
  • Testing & Inspection Services

Flat Grinding & Lapping

Hygrade is the largest flat grinding facility in the Northeast. We can achieve mirror finishes on flat parts up to 60 inches wide. Whether your application calls for a slightly smoother surface or parts sized to millionths of an inch, you can count on Hygrade to get the job done right!

Flat Grinding » Flat Lapping »

Cylindrical Grinding

The Hygrade Team takes great pride in their reputation as a highly regarded and competitive source for cylindrical grinding. Our equipment will grind parts from .236” up to 48” diameter to your exact requirements on the most difficult materials, including exotic steels and chrome plate.

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CNC Multi-Axis Machining

Hygrade’s extensive CNC multi-axis turning & milling centers allow us to handle challenging materials such as high-temperature alloys. Hygrade will meet your machining needs from blueprint to finished part, at a competitive cost.

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Testing & Inspection Services

Hygrade offers a full suite of non-destructive testing and inspection services, including CMM inspection and NADCAP-certified surface temper etch services.

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© 2019 Hygrade Precision Technologies, Inc.
329 Cooke Street | Plainville, CT 06062
Phone: 860.747.5773 | Fax: 860.747.3179
contact@hygrade.com
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